Implement create for common data queries

[WilkinsonK]

As a developer using this library suite, I would like to have implementations predefined for most common data queries. That is, I would like to have an integration between the defined models and their appropriate REST PUT and POST calls.

We will want creators for the following, in order of priority:

• [x] Project
• [x] Subject
• [x] Experiment
• [x] Scan

There are other models that have appropriate PUT and POST calls available to them according to their API documentation, however they are not a priority for this story and can be dealt with at a later time.

[WilkinsonK]

Create still needs to be implemented for Resource models.

• [x] Resource